Question

There is no atmosphere on the moon. Can you hear each other on the moon's surface?

Answer 1

The Moon has no the atmosphere – at its surface, it is a near vacuum and sound cannot travel without a medium. So we can't hear each other on the moon's surface. However, Electromagnetic waves can travel through the vacuum of space as they don't need a medium other than space itself. So, astronauts on the Moon's surface would talk to each other using a radio.